Protein powder is not recommended for patients with poor kidney function, because protein powder is a combination of several proteins such as soy protein, casein, whey protein and pea protein, which are mainly plant proteins and contain more non-essential amino acids, which will aggravate the azotemia of patients with renal insufficiency, increase the burden on the kidneys and promote the deterioration of kidney function, so it is not recommended for patients with poor kidney function to take protein powder. The protein eaten by patients with poor kidney function should be high-quality protein, that is, animal protein, such as meat, eggs and milk, which contain more essential amino acids and are beneficial to the absorption of the body and do not increase the risk of azotemia.